China is one of the largest production bases for heat sinks, providing access to a range of options in terms of materials and surface treatments for various applications.
Widely available are types made of copper and aluminum, although other metals can be used when required. They can have a polished, anodized, sandblasted, sand-sprayed, degreased, plated, passivated or powder-coated finish.
Suppliers can match specifications for use in consumer electronics, computers, communication equipment and vehicles. This is as they continue to adopt new materials and techniques to further improve product efficiency. Ceramic is one such material, with properties of high insulation, EMI absorption, corrosion and oxidization resistance as well as low thermal expansion coefficient. However, such heat sinks are more expensive and require a more complex production process.
Other manufacturers have ventured into diamond heat spreaders, which use a sheet of synthetic diamond. Henan LiLiang is one company already doing so, while Huawei has patent applications on its own technology.
The material offers 2,000W/mK thermal conductivity, which is 13 times that of silicon and four times that of silicon carbide or copper. As such, GPU-on-diamond is considered the future trend in semiconductors. From a $37 million market in 2025, diamond heat spreaders are expected to reach $15.2 billion in 2030, posting a stupendous 214 percent CAGR, according to Kaiyuan Securities.
Still, this technology is not likely to replace heat sinks in all applications, as the latter will remain a cost-effective option and both can be used in combination.
Heat sink, ISO 2768 dimensional tolerance
Company: Dongguan Foxron Precision Metal Parts Co. Ltd
Dongguan Foxron’s model FR00557 is an RoHS-compliant heat sink with an aluminum plate, copper, aluminum or stainless steel tubing and a degreased, polished, nickel-plated, black anodized or sandblasted finish. Its dimensional tolerance meets ISO 2768 requirements. MOQ: 100 pieces
Lead time: 5 days
Heat sink, customizable dimensions
Company: Dongguan Foxron Precision Metal Parts Co. Ltd
The F000778 heat sink from Dongguan Foxron can be made of pure copper and aluminum alloy or other materials and can have a passivated, plated or anodized surface treatment. It is RoHS-compliant. The dimensions can be customized based on intended applications.
MOQ: 100 pieces
Lead time: 5 days
Heat sink, 0.01mm dimensional tolerance
Company: Dongguan Taihe Hardware Products Co. Ltd
Dongguan Taihe offers the Heatsink-2680, which can be made of aluminum or copper and can have a degreased, sand-sprayed, anodized or other surface treatment. This device has 0.01mm dimensional tolerance and is shipped without burrs, sharp edges and traces.
MOQ: 100 pieces
Lead time: 15 days
Aluminum heat sink
Company: Dongguan Taihe Hardware Products Co. Ltd
The Heatsink-3347 from Dongguan Taihe is made of aluminum and has a polished, anodized, sandblasted or other surface treatment. It meets CCC and RoHS requirements.
MOQ: 100 pieces
Lead time: 15 days
Heat sink with 10-piece MOQ
Company: Shenzhen Zhendong Precision Metal Co. Ltd
Shenzhen Zhendong offers the ZD-001#9881, a heat sink made of aluminum or copper and subjected to polishing, anodizing, sandblasting, powder coating or other surface treatment.
MOQ: 10 pieces
Lead time: 7 days
Heat sink with seven-day lead time
Company: Shenzhen Zhendong Precision Metal Co. Ltd
Shenzhen Zhendong’s model ZD-001#9546 is a heat sink that may be made of aluminum, copper or other materials. It has a polished, anodized, sandblasted, powder-coated or other finish.
MOQ: 10 pieces
Lead time: 7 days
